Add :touch2 --import testing code to Rakefile.

In commented out form, to be used when needed.
Ignore hidden members when counting new ones.

The Class#find_members(:local=>true) previously also returned
the hidden members.  This resulted from the fact that internally
it was using #global_by_id and #local_by_id indexes from MembersIndex
class.  As these maps are also used internally inside MembersIndex
I'm now exposing #all_global and #all_local methods which return
the arrays instead of hashes and both without any hidden members.
Show "Nothing found" text when search fails.

That's much better than the previous flickering where before performing
the search the dropdown was shown and after getting no results it was
hidden again.

Better to just show a message "Nothing found" - this will also make
clear to the user that the search found no results and didn't just fail
for whatever reason.